Year	Percent
1995	9.496
1996	9.496
1997	9.496
1998	7.842
1999	10.43
2000	11.37
2001	9.442
2002	10.55
2003	13.95
2004	13.45
2005	12.69
2006	12.34
2007	13.34
2008	14.05
2009	15.12
2010	16.64